Sealing means for fluid storing containers



July 5, 1932. F. SCHURMANN SEALING MEANS FOR FLUID STORING CONTAINERS Filed March 8, 1929 2 Sheets-Sheet -1 July 5, 1932 F. SCHURMANN 1,865,969

SEALING MEANS FOR FLUID STORING CONTAINERS I Filed March 8. 1929 zsneets-sheet 2 Patented July :1932

UNITED fsrArssrArsur OFFICE r'nmiimcn scnunmu, or non'rmunn, GERMANY, ASSIGNOR TO was man: AUG.- I 31.0mm, or non'rmunn, GERMANY SEALING menus FOB rnurn s'ron me ooiv'i'unnns Application filed March 8 1929,'Seria1 No. 345,500, and in Germany March 8, 1928.

This invention relates to a sealing piston of a reservoir for the storage of gas, steam or' volatile liquids, the sealing ringof which piston is supported by an extensible sheet metal ring. According to the present invention the extensible ring is madeof corrugated sheet metal. This simplifies the manufacture of the extensible sheet metal ring and makes the'ring more yielding. Preferably the corrugations of the sheet metal ring are tapered downwardly, while the sheet metal ring is rigidly connected at its lower end with the sealing piston. The ronnection may-be made in such a manner that the lower edge ofthe sheet metal ring is bent inwards and upwards and is rigidly connected by its upwardly bent end with the sealing piston.

Several constructionaLexamples of the invention are shown in the accompanying drawings, in which Fig. 1 is a vertical section through one constructional form, Fig. 2 a horizontal section on line 2-2 of Fig.'-1

Fig. 3 a verticalsec'tion through a second constructional form,

Fig. 4 a horizontal section on line of Fig. 3,;

- Fig. 5. a vertical section through the same constructional form as Fig. --3 but with the parts in a diflerent position,

. Fig. 6 a'section on line 6-6 of Fig." 5,"

Fig. 7 a vertical section through athird constructional form and 9 Fig. 8' a horizontal section on line 8-8 of Fig. 7 v The sealing piston illustrated in Figs. 1 and 2 consists of adisc-shaped member a which provided with a shell 0. At the lower end of the shell a liquid pocket is is formed. The piston a is provided "with supports e,to which an extensible sheet metal ring 6 is suspended by means of ropes. The

rugated sheet metal, said corrugations being vertically disposed as is clearly shown in Fig. 2. In the example .shown it supports two sealing rings 7 which rest against the inner surface of the container 9. Instead of extensible sheet metal ring consists of cor two/rings a single ring might be used, but

more than two rings may also be used.

I On the supporting members 6 cranked levers. cl are pivoted which support sliding weights k. The downwardly extending arm of the cranked lever d is pivoted to a bar 1' which is rigidly fixed to the corrugated sheet metal.

. Through theweight-loaded cranked levers the sealing rings f are pressed by means of the corrugated sheet metal ring firmly against the inside wall of the container g, so that an e'fiective seal is formed at this place. The lower end of the sheet metal ring 1) extends into the liquid pocket is so that a good seal is obtained at the lower end as well.

- If it is desired to do without a liquid pocket, the constructional forms shown inFigs.

3 to 8 may be used. 'In these constructional forms the corrugations of the corrugated 7 sheet metal ring taper towards the bottom.

In other words, the height of the corrugations decreases towards the bottom, such that the sheet metal ring is smooth at the bottom, as will be seen from Figs. 3, 5 and 7.

In this constructional form it is advisable to use a single sealing ring fonly.

Figs. 3 and a show the sealing ring when new, while Figs. 5 and 6 show it after it has become worn.

As Figs. 3 and 5 show the sheet metal ring I) is connected by means of a U-shaped ring 1 to the piston body a In the constructural form shown in Figs. 3 to 6 the U-shaped ring 1 is made integral with the sheet inetal ring 6. The free end of the sheet metal ring I) is rigidly connected to the body a for instance by means of the ring m of angle iron.

In the constructional example shown in Figs. 7 and 8 the U-shaped ring 1 consists of a separate part which is connected to the. sheet metal ring I) at What I claim is: 1. A sealing piston for containers for the storage of gas, steam or volatile fluids comprising an extensible ring of corrugated sheet metal, said corrugations being vertically disposed, and a sealing ring supported by said sheet metal ring. v

, signature.

2. A sealing piston for containers for the storage of gas, steam or volatile fluids comprising an extensible ring of corrugated sheet metal, said corrugations being vertically disposed, and a. sealing ring supported by said sheet metal ring, said corrugated sheet metal ring having its corrugations tapering towards the lower end and smooth at the lower end, and means for conheating the said lower end to the body of the sealing piston in a gas-tight manner.

A sealing piston for containers for the storage of gas, steam or volatile fluids'comprising an extensible ring of corrugated sheet metal, said corrugations being vertically disposed, and a sealing ring supported by said sheet metal ring, said corrugated sheet metal ring having its corrugations tapering towards the lower end and smooth at the lower end, and a U-shaped ring for connecting the said lower end tothe body of the sealing piston in a gas-tight manner.

4:. A sealing piston for containers'for the storage of gas, steam or volatile fluids comprising an extensible ring of corrugated sheet metal, said corrugations being vertically disposed, and a sealing ring. supported by said sheet metal ring, said corrugated sheet metal ring having its corrugations tapering to wards the lower end and smooth at the lower end, and a Ushaped ring' connected to the corrugated sheet metal ring for connecting the said lower end to the body of the sealing piston in a gas-tight manner.

In testimony whereof I have aifixed my FRIEDRICH SOHI TRMANN. 

